Smithsonian Report. 1951.— F. H. H. Roberts 



PLATE 7 



2. Scries of plctographs in the Boj'sen Reservoir, Wyoming. 



2. Using the bulldozer to remove the overburden from one of the sites in the Angostura 

 Reservoir. The cultural layer ma\- be seen in the wall of the trench in the right fore- 

 ground. 



